Unibit Step drill 1/4-1 3/8"Unibit Step drill 1/4-1 3/8" ￼Our Unibits are a convenient way to make various sizes holes without changing drill bits. This HSS titanium coated bit is great for drilling into plastic, steel, copper, wood, aluminum, and many other materials. They are very useful when installing ebb&flow systems or making your own hydroponic drip systems. This bit has a 10 total steps which r... — Ships from DL: Livermore, California USA...more info.